85958149 has 2 divisors, whose sum is σ = 85958150. Its totient is φ = 85958148.

The previous prime is 85958111. The next prime is 85958179. The reversal of 85958149 is 94185958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69189124 + 16769025 = 8318^2 + 4095^2 .

It is a cyclic number.

It is not a de Polignac number, because 85958149 - 2⁷ = 85958021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85958179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42979074 + 42979075.

It is an arithmetic number, because the mean of its divisors is an integer number (42979075).

Almost surely, 2^85958149 is an apocalyptic number.

It is an amenable number.

85958149 is a deficient number, since it is larger than the sum of its proper divisors (1).

85958149 is an equidigital number, since it uses as much as digits as its factorization.

85958149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 49.

The square root of 85958149 is about 9271.3617662132. The cubic root of 85958149 is about 441.3288836491.

The spelling of 85958149 in words is "eighty-five million, nine hundred fifty-eight thousand, one hundred forty-nine".